Summary
Kaifeng Sun is a seasoned iOS developer with a decade of experience building high-scale mobile and macOS products, including features for bilibili that served millions of daily users and cross-platform conferencing at RingCentral. He specializes in Swift, clean architecture, and modular system design, with hands-on expertise in AppExtensions, CallKit/PushKit, C++ cross-platform SDKs, and runtime-based theming. Kaifeng has driven reliability and observability improvements—designing ANR monitoring and closed-loop crash/quality reporting systems—that tangibly raised stability for real-time audio/video apps. Comfortable in multinational teams, he bridges product and platform needs to deliver maintainable, performant code across iOS and macOS. Colleagues know him as a pragmatic engineer who prioritizes user experience and developer ergonomics while quietly shipping complex infrastructure like multi-process conference robots and dynamic framework builds.
10 years of coding experience
9 years of employment as a software developer